Martin Authentic Acoustic Guitar Strings, Superior Performance Custom 11.5-47, Silk & HT Steel Because tap and bottled water

Because tap and bottled water have dissolved minerals that can clog the liner

Touch Response - 3 sensitivity levels

It's especially useful for overdriven tones

bright highs and strong upper mids

Includes a nice gig bag

Martin Authentic Acoustic Guitar Strings, Superior Performance Custom 11.5-47, Silk & HT Steel Because tap and bottled waterMartin Authentic Acoustic Guitar Strings, Superior Performance Custom 11. 5 47, Silk & HT Steel. Martin Authentic Acoustic Superior Performance SP strings feature higher tensile strength and tin plated core wire on all six strings that enable a fuller and more balanced tone, quicker response and increased tuning stability. Silk steel 11. 5 14 26 28 38 47 Highest Tensile Strength core wire tin plated on all six strings for added corrosion resistance